Abstract: The invention relates to a propellant charge igniter mountable in a propellant charge carrier or in a cartridge. Propellant charge igniter is provided with an expulsion charge to avoid breech flash, said charge being suitable for driving an ignition guide tube completely out of an annular chamber formed between a bottom part and a flame guide tube of the propellant charge igniter.

Abstract: Gas generator for an inflatable impact cushion for protecting an occupant of a motor-vehicle from injury, has a housing, in which is formed a storage chamber for liquified gas. The storage chamber is separated by a partition wall from a combustion chamber also formed in the housing. An ignition device is positioned in a precombustion chamber, and has an ignition charge to generate combustion gases during ignition. In the precombustion chamber there is guided, in a displaceable manner, a piston which, because of the combustion gases of the ignition charge, moves into and through the combustion chamber in a direction of the partition wall, in order to penetrate the partition wall. When the partition wall is penetrated there is a connection between the storage chamber and the combustion chamber by way of a liquified gas channel system so that liquified gas can flow into the combustion chamber.

Abstract: In a multiple-barrel firearm with removable lock housing, the two axially moveable strikers are arranged in superposed relationship, preferably being angular and provided with grooves or edges; this arrangement permits, even in case of only one solid sidewall, a favorable guidance of the strikers and contributes considerably toward making the lock housing very narrow. Since, in this firearm, the movement of a cocking bar just as the movement of firing pins takes place approximately in parallel to the movement of the strikers, the advantage is obtained in addition to a relatively simple structure that the energy for cocking coil springs guided by means of guide pins can be at a minimum as well. The guide pins connected with the strikers also take over safety functions.

Abstract: In a submarine weapon, particularly for combating submarines, a rocket engine with continuous rocket thrust is utilized as the submarine drive unit. An actively locating, acoustic target seeking device is provided for target detection and target pursuance, the ranging frequency of which is selected so that the echo level to be expected from its detection range lies above the noise level of the rocket engine.

Abstract: A filter device for filtering a gas flow, especially for filtering the gases produced by a gas generator for an impact protection cushion, comprises a filter element exhibiting several filter material plies of varying permeability lying in series in the flow direction. The filter element is fashioned as a wrapped member produced by winding up a length of filter material. The length of filter material has sectionally different filter materials, preferably wire mesh of differing mesh widths and metal fiber mats. A wrapped member is formed by winding up this filter material web, the wrapping plies of which consist of different materials with varying filter effects. This filter element wrap is inserted, for example, in the annular interspace between the two tubes of a double-tube gas generator. Owing to the rising pressure of the gas to be cleaned, the wrapped member is compacted with the consequence that its filtering function is improved.

Abstract: The gas generator has two tubes, coaxial to each other, with different diameters, between which there is formed an annular intermediate chamber. The inner tube is filled with gas-producing material in the form of pellets, which develops pressure gas when ignited, the gas emerges via openings in both tubes. Projecting into the inner tube there is an ignition device, which extends through the cylindrical walls of both tubes. The ignition device is held by a ring or tubular holding body, which is substantially shorter than both tubes and fills out the intermediate chamber between both tubes. Both tubes are provided with peripheral openings aligning with each other, and the holding body has an installation through-hole, into which the ignition device is positioned. The holding body has furthermore a slot. The ignition device is held in a reliable manner by means of the holding body.

Abstract: A passive safety device comprises a sensor unit for determining vehicle accelerations and decelerations, an evaluating unit for evaluating the output signal of the sensor unit, and a triggering unit for the activation of an occupant protection system upon the reception of a trigger signal, to protect the occupants from injuries. The individual units of the safety device are connected by way of optical lightguides, i.e. the communication among the individual units takes place through optical light signals. The sensor unit has an optical-mechanical acceleration sensor with at least one input lightguide, light being transmitted to the acceleration sensor by way of this lightguide. This light is transmitted within the acceleration sensor to at least one output lightguide. The optical system of the acceleration sensor arranged between the two lightguides is exposed to the accelerations to be detected and changes its optical properties in dependence on the magnitude of the acceleration forces.

Abstract: A cartridge is made up of a synthetic resin case member and a synthetic resin lid. The case member contains a first receiving chamber for receiving an igniter charge and a second receiving chamber for the accommodation of a propellant charge. A synthetic resin ignition pin flexibly connected to the lid extends into the first receiving chamber. Upon the exertion of pressure by a striker on the rear end of the ignition pin, the pin is advanced further into the first receiving chamber, a pointed forward percussion end of this ignition pin acting on the igniter charge to ignite the charge. The igniter charge is accommodated in funnel shape in a conical depression of the first receiving chamber. The percussion end of the ignition pin, extending into the igniter charge, upon displacement, causes friction in the igniter charge material and thus generates frictional heat therein.

Abstract: In a broad-area defense mine, the inclination under which an active member can rise or can be fired from an ambush position can be varied with the aid of at least one adjusting member between the positioning frame and a mounting or support for the active member which, in turn, are connected by way of a universal joint. In this arrangement, the mine, in the same way and with equal reliability as heretofore, combats a target within a specific area, but it is possible by means of this device to defend a substantially larger zone: the mine is transported, within the larger zone, to the "correct" site.

Abstract: An ignition unit is provided with an internal housing defining a chamber in which an ignition charge and an ignition element igniting the charge are accommodated. The housing defining the chamber consists of a cover and a container which are connected to one another along a circumferential groove. A distributor housing is mounted on to the housing forming the chamber, in which distributor housing gas outlet openings are provided which are closed by a cap-shaped cover of the chamber. The V-shaped circumferential groove represents a predetermined breaking or separation position of the chamber, for which reason the cover is separated from the container when the ignition charge is ignited. The cover moves away from the container into a space until it strikes the upper end of the distributor housing. With its movement relative to the distributor housing, the cover releases the gas outlet openings so that the gases and flames can emerge from the ignition unit.

Abstract: A gas generator is provided with a housing which is open at two opposing end faces and a housing wall in which several gas orifices are arranged. The housing is formed as an extruded hollow profile of aluminum or an aluminum alloy. A combustion chamber is accommodated in the housing, in which combustion chamber gas-generating material which is ignitable by means of an ignition unit is accommodated. The combustion gases arising with the ignition of the gas-generating material are cleaned within the housing by filter elements and discharged by means of the gas orifices. The filter elements are supported by holding sections integral with the extruded hollow profile and are inserted by means of one of the open end faces of the extruded hollow profile. In the installed state the filter elements extend in a straight line between the holding sections associated therewith.

Abstract: An expansive smoke configuration can be produced manually or automatically by the rapid, repeated discharge of smoke-forming liquid jets. A suitable device consists essentially of one or several movable tubes, each equipped with a nozzle, in conjunction with cartridges occupying the entire tube volume and having a liquid chamber and a propellant charge chamber. In case of two-component smokes, cartridges filled respectively with the two components (N1, N2) are fired in alternation. The device lends itself very well to automatic operation.

Abstract: A gas generator is provided with an outer tube and an inner tube arranged coaxially within the outer tube. The pressure gas-generating charge is accommodated in the inner tube, the charge being ignited by an ignition unit. The generator is closed at the ends in a gas tight manner by closure covers, which are surrounded laterally by the end sections of the outer tube. On the inside of the closure covers there is in each case a recess for accepting the ends of the inner tube. The recesses hold the inner tube centered in the outer tube. Each cover is further provided with a peripheral groove, in which interior projections, directed inwards, and formed by multiple notching by means of a notching tool, engage. These projections, for their part, are arranged on the inner peripheral surface of the outer tube in the end sections thereof.

Abstract: The gas generator has a cylindrical housing, the front ends of which are closed by closure covers. A cylindrical outer section of the housing consists of high-grade steel; whereas the closure covers are made of aluminum, which has a thermal conductivity which is greater many times greater than that of the high-grade steel. In at least one of the closure covers, there is inserted a self-ignition device, which is provided with an ignitable material, that automatically ignites when reaching a minimum temperature. This minimum temperature clearly lies below the self-ignition temperature of the pressure gas-generating charge contained within the gas generator. The poor thermal conductivity in the cylindrical section of the housing prevents heat transport or transfer from outside via the housing to the pressure gas-generating charge; whereas the good thermal conductivity of the closure covers allows the quick heat transport to the self-ignition device.

Abstract: A method and apparatus for injection molding of thermoplastic material to form a hollow article in a closed mold in which a molten thermoplastic material is introduced from an injection nozzle into a mold cavity through an opening in the mold, and a pressurized gas is introduced together with the molten thermoplastic material through said opening so that the gas forms a hollow cavity under pressure within the thermoplastic material filling the mold. After the thermoplastic material is solidified to form a hollow article within the closed mold, the gas pressure in the hollow cavity of the article is reduced and the mold is opened. The pressurized gas is introduced into the mold from a gas source and the gas pressure is subsequently reduced by recycling at least a portion of the gas in the hollow cavity to the gas source, thereby avoiding loss of the gas to the surrounding atmosphere.

Abstract: This invention deals with case-less ammunition, the propelling element of which has increased solidity. This increase in solidity is achieved by virtue of the fact that the propelling charge is firmly enveloped in a fabric. The fabric may consist of completely synthetic organic fibers or of mineral bibers. The ammunition in accordance with the invention manifests increased stability during loading and transportation in the weapon and better internal ballistics data than comparable ammunition known to date on the basis of the higher tamping attained.

Abstract: Combustible cartridge shells have cylindrical walls formed of combustible material. The walls comprise one or more wraps or windings of textile fibers, which are bound together with bonding agents having propellant charge characteristics. The bonding agents comprise either a mixture of polymers and explosives with decomposition temperatures above 180.degree. C. or a mixture of polymeric nitro-aromatic compounds which have two or more nitro groups per aromatic nucleus and also have a decomposition temperature above 180.degree. C. Mixtures of these two bonding agents may also be used to form the cylindrical wall of the combustible cartridge shell. The cartridge shells have inherently stable walls with a high mechanical resistance and are unaffected by changes in temperature up to 240.degree. C. Advantageously, these shells burn practically free of any residuals.

Abstract: By means of multi-member, spreadable righting assemblies, a supporting area can be enlarged in connection with a rightable drop unit, the torque required for righting can be reduced, and the stability can be enhanced. In order to provide that a base of each righting assembly does perform the desired, defined movement, at least one guide member (for example a parallel guide means) is included. The afore-mentioned improvements can be attained practically without an increase in the volume or in the weight of the drop unit.

Abstract: A method for producing porous propellant charges from a mixture containing a propellant and a filler is described wherein a propellant having a decomposition temperature above 200.degree. C. is employed with a thermally removable filler to provide the charge forming mixture. The mixture is molded into a charge body and is subsequently heated to remove the filler at a temperature that is at least 50.degree. C. below the decomposition temperature of the propellant. Due to the heating at the elevated temperature the filler is wholly or in part removed to form a cavity within the charge body.

Abstract: A device for firing ammunition includes a combustion chamber accommodating several propellant charge members which latter contain a propellant charge and an ignition system for igniting the propellant charge. A fixedly disposed primary coil which receives an ignition signal is provided at the combustion chamber while a secondary coil is arranged in each propellant charge member, this secondary coil being connected to a resistor initiating the ignition system. The magnetic field, changing with time, which is produced by the primary coil penetrates the combustion chamber and induces a current in the secondary coils of each propellant charge member at the same time so that the ignition systems of all propellant charge members are simultaneously activated and ignite all propellant charges at once. On account of the simultaneous ignition of the propellant charge members, rapid firing sequences can be attained.